Finding the Fourth Proportional to 70,323.07, 105,462.59 and 20,406.62

Step by Step Solution

1. Step 1: Write the proportion equation
   70,323.07 : 105,462.59 = 20,406.62 : x
2. Step 2: Convert to fraction form
   70,323.07/105,462.59 = 20,406.62/x
3. Step 3: Cross multiply
   70,323.07x = 105,462.59 × 20,406.62
4. Step 4: Simplify right side
   70,323.07x = 2,152,134,998.35
5. Step 5: Solve for x
   x = 2,152,134,998.35/70,323.07
6. Step 6: Final answer
   x = 30,603.54